1|Page
EDELMAN'S SPI PREP 2025/2026 EXAM WITH ALL
COMPLETE QUESTIONS AND DETAILED CORRECT
ANSWERS (VERIFIED) FOR GUARANTEED PASS
TOP-RATED A+.
EDELMAN'S SPI
Pass all your Edelman SPI Prep Exams with confidence. This
comprehensive review resource features practice questions,
explanations, and key ultrasound physics topics aligning with
Edelman’s SPI course content and ARDMS exam standards. Ideal for
reinforcing knowledge in Sonography Principles and Instrumentation
certification.
How many milliliters are in 8 liters? ...... ANSWER .......
8,000
How many milliliters are contained in a jar filled with 5 liters
of fluid? ...... ANSWER ....... 5,000
All waves carry _______ from one location to another. ......
ANSWER ....... Energy
In diagnostic ultrasonography, sound travels through
______? ...... ANSWER ....... Biologic tissue, or media
Many forms of waves exist, including, _____, ______,
______, and ______. ...... ANSWER ....... Heat, sound,
magnetic, and light.
,2|Page
Sound can/cannot travel through a vacuum? ......
ANSWER ....... Cannot, it doesn't have a medium in a
vacuum.
What happens to the molecules of the media as sound
travels? ...... ANSWER ....... They are compressed
(squeezed together) and rarefied (stretched apart)
Sound travels in a straight/curved/diagonal line? ......
ANSWER ....... Straight
Sound waves are longitudinal/horizontal and
mechanical/electrical? ...... ANSWER ....... Sound
waves are longitudinal mechanical waves.
What are acoustic propagation properties? ...... ANSWER
....... The effects of the medium upon the sound wave.
What are biologic effects? ...... ANSWER ....... The
effects of the sound wave upon the biologic tissue through
which it passes.
What 3 acoustic variables are used to distinguish sound
waves and other types of waves? ...... ANSWER .......
Pressure, density, and sitance
What is pressure? And what is its unit? ...... ANSWER
....... Pressure is the concentration of force in an area.
Unit is pascals (Pa)
,3|Page
Define density and list its unit. ...... ANSWER .......
Density is the concentration of mass in a volume, its unit is
kg/cm3.
Define distance, and its units. ...... ANSWER .......
Distance is a measure of particle motion, measured in cm,
feet, and miles along with other units.
If pressure, density, or distance rhythmically oscillates in a
wave the the wave is/is not a sound wave. If something other
than distance, pressure, or density rhythmically oscillates in a
wave, then the wave is/is not a sound wave. ......
ANSWER ....... Is
Is not
What is another name for a sound wave? ...... ANSWER
....... An acoustic wave
What seven acoustic parameters are used to describe a sound
wave? ...... ANSWER ....... Period
Frequency
Amplitude
Power
Intensity
Wavelength
Propagation Speed
In a transverse wave, particles move in a the same
direction/perpendicular to the direction the wave propagates
, 4|Page
...... ANSWER ....... In a transverse wave, the particles
move in a direction that is perpendicular to the direction
that the wave propagates.
In a longitudinal wave, particles move in the same
direction/perpendicular to the direction the wave propagates
...... ANSWER ....... In a longitudinal wave, particles
move in the same direction that the wave propagates.
When a pair of waves peak at the same time and the troughs
of these waves occur at the same time, the wave is said to be
in-phase or out of phase? ...... ANSWER ....... The
waves are in-phase.
When waves of different magnitudes combine to form a
single wave it is called? ...... ANSWER .......
Interference
Do both in-phase sound waves and out-of-phase sound waves
undergo interference? ...... ANSWER ....... Yes, but they
undergo interference differently.
What type of interference results when a pair of in-phase
waves form a single wave? ...... ANSWER ....... A wave
if formed that has greater amplitude than either of its
components. This is called constructive interference.
What type of interference results when two waves that are
out-of-phase are combined to form a single wave? ......
ANSWER ....... The two waves form a single wave of
EDELMAN'S SPI PREP 2025/2026 EXAM WITH ALL
COMPLETE QUESTIONS AND DETAILED CORRECT
ANSWERS (VERIFIED) FOR GUARANTEED PASS
TOP-RATED A+.
EDELMAN'S SPI
Pass all your Edelman SPI Prep Exams with confidence. This
comprehensive review resource features practice questions,
explanations, and key ultrasound physics topics aligning with
Edelman’s SPI course content and ARDMS exam standards. Ideal for
reinforcing knowledge in Sonography Principles and Instrumentation
certification.
How many milliliters are in 8 liters? ...... ANSWER .......
8,000
How many milliliters are contained in a jar filled with 5 liters
of fluid? ...... ANSWER ....... 5,000
All waves carry _______ from one location to another. ......
ANSWER ....... Energy
In diagnostic ultrasonography, sound travels through
______? ...... ANSWER ....... Biologic tissue, or media
Many forms of waves exist, including, _____, ______,
______, and ______. ...... ANSWER ....... Heat, sound,
magnetic, and light.
,2|Page
Sound can/cannot travel through a vacuum? ......
ANSWER ....... Cannot, it doesn't have a medium in a
vacuum.
What happens to the molecules of the media as sound
travels? ...... ANSWER ....... They are compressed
(squeezed together) and rarefied (stretched apart)
Sound travels in a straight/curved/diagonal line? ......
ANSWER ....... Straight
Sound waves are longitudinal/horizontal and
mechanical/electrical? ...... ANSWER ....... Sound
waves are longitudinal mechanical waves.
What are acoustic propagation properties? ...... ANSWER
....... The effects of the medium upon the sound wave.
What are biologic effects? ...... ANSWER ....... The
effects of the sound wave upon the biologic tissue through
which it passes.
What 3 acoustic variables are used to distinguish sound
waves and other types of waves? ...... ANSWER .......
Pressure, density, and sitance
What is pressure? And what is its unit? ...... ANSWER
....... Pressure is the concentration of force in an area.
Unit is pascals (Pa)
,3|Page
Define density and list its unit. ...... ANSWER .......
Density is the concentration of mass in a volume, its unit is
kg/cm3.
Define distance, and its units. ...... ANSWER .......
Distance is a measure of particle motion, measured in cm,
feet, and miles along with other units.
If pressure, density, or distance rhythmically oscillates in a
wave the the wave is/is not a sound wave. If something other
than distance, pressure, or density rhythmically oscillates in a
wave, then the wave is/is not a sound wave. ......
ANSWER ....... Is
Is not
What is another name for a sound wave? ...... ANSWER
....... An acoustic wave
What seven acoustic parameters are used to describe a sound
wave? ...... ANSWER ....... Period
Frequency
Amplitude
Power
Intensity
Wavelength
Propagation Speed
In a transverse wave, particles move in a the same
direction/perpendicular to the direction the wave propagates
, 4|Page
...... ANSWER ....... In a transverse wave, the particles
move in a direction that is perpendicular to the direction
that the wave propagates.
In a longitudinal wave, particles move in the same
direction/perpendicular to the direction the wave propagates
...... ANSWER ....... In a longitudinal wave, particles
move in the same direction that the wave propagates.
When a pair of waves peak at the same time and the troughs
of these waves occur at the same time, the wave is said to be
in-phase or out of phase? ...... ANSWER ....... The
waves are in-phase.
When waves of different magnitudes combine to form a
single wave it is called? ...... ANSWER .......
Interference
Do both in-phase sound waves and out-of-phase sound waves
undergo interference? ...... ANSWER ....... Yes, but they
undergo interference differently.
What type of interference results when a pair of in-phase
waves form a single wave? ...... ANSWER ....... A wave
if formed that has greater amplitude than either of its
components. This is called constructive interference.
What type of interference results when two waves that are
out-of-phase are combined to form a single wave? ......
ANSWER ....... The two waves form a single wave of
